nginx.conf

events {
  worker_connections 768;
}

http {
  set_real_ip_from 127.0.0.1;
  set_real_ip_from 10.0.0.0/8;
  real_ip_header X-Forwarded-For;
  real_ip_recursive on;


  server {
    listen   80;
    server_name example.com;

    location '/.well-known/acme-challenge' {
      default_type "text/plain";
      root         /tmp/letsencrypt;
    }

    location / {
      if ($request_method = GET) {
        rewrite  ^ https://$host$request_uri? permanent;
      }
      return 405;
    }
  }

  server {
    listen 443 ssl http2;
    server_name example.com;
  
    ssl_protocols TLSv1.2;
    ssl_ciphers HIGH:!MEDIUM:!LOW:!aNULL:!NULL:!SHA;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
  
    ssl_certificate     /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;

    proxy_set_header   Host                 $http_host;
    proxy_set_header   X-Forwarded-Proto    $scheme;
    proxy_set_header   X-Forwarded-For      $remote_addr;
    proxy_redirect     off;

    gzip on;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    # keepalive + raven.js is a disaster
    keepalive_timeout 0;

    # use very aggressive timeouts
    proxy_read_timeout 5s;
    proxy_send_timeout 5s;
    send_timeout 5s;
    resolver_timeout 5s;
    client_body_timeout 5s;

    # buffer larger messages
    client_max_body_size 5m;
    client_body_buffer_size 100k;

    location / {
      proxy_pass        http://sentry-web:9000;

      add_header Strict-Transport-Security "max-age=31536000";
    }
  }
}